CN110660506A - Fireproof cable - Google Patents

Fireproof cable Download PDF

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Publication number
CN110660506A
CN110660506A CN201810699760.4A CN201810699760A CN110660506A CN 110660506 A CN110660506 A CN 110660506A CN 201810699760 A CN201810699760 A CN 201810699760A CN 110660506 A CN110660506 A CN 110660506A
Authority
CN
China
Prior art keywords
layer
fire
cable
cable core
wire cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810699760.4A
Other languages
Chinese (zh)
Inventor
郑从相
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG TIANHONG CABLE CO Ltd
Original Assignee
GUANGDONG TIANHONG CABLE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGDONG TIANHONG CABLE CO Ltd filed Critical GUANGDONG TIANHONG CABLE CO Ltd
Priority to CN201810699760.4A priority Critical patent/CN110660506A/en
Publication of CN110660506A publication Critical patent/CN110660506A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/04Flexible cables, conductors, or cords, e.g. trailing cables
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/02Disposition of insulation
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875Multi-layer sheaths
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20Metal tubes, e.g. lead sheaths
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20Metal tubes, e.g. lead sheaths
    • H01B7/205Metal tubes, e.g. lead sheaths composed of aluminium
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806Protection against damage caused by corrosion
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/292Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/295Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Abstract

The invention discloses a fireproof cable, and belongs to the technical field of cables. It includes four at least main electric wire cable cores and a ground wire cable core, every main electric wire cable core and a ground wire cable core all have a band layer around the package outward, all crowded package has an insulating inner sheath layer outward in the band layer, insulating inner sheath layer intussuseption is filled with inorganic mineral substance layer, inorganic mineral substance layer outer cladding is by the fire-resistant mica tape layer of multilayer around the package mica tape layer that forms, the cladding has a metal sheath layer and a fire-retardant oversheath layer outward in proper order outside the mica tape layer. When a fire disaster happens, the fire resistance of the flame-retardant outer sheath and the characteristics of oxidation resistance, high wear resistance and high melting point of the metal sheath are utilized, and then the fire prevention three-level protection of the cable is realized through the high flame resistance of the fire-resistant mica tape, the inorganic mineral substance layer and the insulating inner sheath layer, so that the cable is protected to be normally used.

Description

Fireproof cable
Technical Field
The invention relates to the technical field of cables, in particular to a fireproof cable.
Background
Statistically, the proportion of electrical failure circuit aging in most building fire accidents is about five or more. Along with the rapid development of urbanization, high-rise buildings in developed cities are more and more, the fire-proof cables used in the buildings are more and more paid attention, the fire prevention and flame retardant capacities of the cables laid in the buildings are powerful guarantee for improving the fire-proof performance of the buildings, the use safety of the cables is guaranteed, a better fire-proof effect can be achieved when a fire disaster occurs, the rescue equipment and floors are electrified for a longer time, the design of the fire-proof cables is particularly important, the fire-proof cables are seen from the existing part of the fire-proof cables in the market at present, potential hazards are brought to the environment and human bodies in the manufacturing process, the cables are small in bendable radius and large in laying difficulty in the laying process, a large amount of smoke and other harmful substances are generated during burning, and secondary damage is caused to the human bodies.
Disclosure of Invention
In order to make up for the defects of the performance of the fireproof cable in the existing market, the fireproof cable provided by the invention can effectively improve the bending performance of the cable and reduce the secondary damage of harmful smoke generated during the combustion of the cable to a human body.
The technical scheme provided by the invention is as follows: a fireproof cable comprises at least four main cable cores and a ground wire cable core, wherein each main cable core and each ground wire cable core are wrapped with a wrapping layer, and an insulating inner sheath layer is extruded outside the wrapping layer. Insulating inner sheath layer intussuseption is filled with inorganic mineral substance layer, the outer cladding of inorganic mineral substance layer has the mica tape layer around the package by the fire-resistant mica tape layer of multilayer, and the outer cladding in proper order of mica tape layer has a metal oversheath layer and a fire-retardant oversheath layer, metal sheath is embossing copper sheath or embossing aluminum alloy sheath, and the normal circular telegram of cable when the design of double-deck fire prevention can effectual assurance conflagration condition.
Preferably, each main line cable core and one ground line cable core are twisted together.
Preferably, each main line cable core and one ground line cable core are composed of seven solid copper conductors.
Preferably, a wrapping tape layer wrapped by each main electric wire cable core and each ground wire cable core is a high-temperature-resistant flame-retardant non-woven fabric layer.
Preferably, the insulating inner sheath layer is a ceramic low-smoke halogen-free polyolefin insulating layer, a hard ceramic hard shell can be generated under a high-temperature condition, a good heat insulation and fire insulation effect is achieved, and the cable core is guaranteed to be normally powered on for use.
Preferably, the flame-retardant outer sheath layer is a low-smoke halogen-free flame-retardant outer sheath layer, so that toxic smoke is not generated during combustion, and secondary damage to a human body is avoided.
The invention has the beneficial effects that: the cable is characterized in that the cable is provided with structures such as a flame-retardant outer sheath layer, a corrugated metal sheath layer, a mica tape layer, an inorganic mineral substance layer and a ceramic low-smoke halogen-free polyolefin insulating layer in the outer part and the inner part, the corrosion resistance, the waterproofness and the wearability of the flame-retardant outer sheath layer and the corrugated metal sheath layer are utilized to ensure the long service life of the cable, and under the condition of fire, the cable is subjected to multi-stage fireproof protection through the high-insulation excellent fireproof performance of the corrugated metal sheath layer, the mica tape layer, the inorganic mineral substance layer and the ceramic low-smoke halogen-free polyolefin insulating layer, and the thread structure of the corrugated metal sheath layer effectively improves the bending performance of the cable and reduces the difficulty.
In addition, compared with the fireproof cable with the inorganic fiber filler wrapped outside the conductor in the prior art, the insulating fireproof cable provided by the invention has the fireproof layer containing mineral substances, so that the inorganic fiber filler is not required to be added, and fiber filaments cannot float into the air in the production process, so that the health of operators cannot be influenced.
Drawings
FIG. 1 is a schematic of the layered structure of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Fig. 3 is an enlarged structure schematic diagram of the main wire cable core.
In the figure, 1-flame-retardant outer sheath layer, 2-metal sheath layer, 3-mica layer, 4-inorganic mineral layer, 5-main electric wire cable core, 6-ground wire cable core, 501-insulating inner sheath layer, 502-belting layer and 503-solid copper conductor.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
As shown in the figure, the fireproof cable comprises at least four main electric cable cores 5 and one ground wire cable core 6, wherein each main electric cable core 5 and each ground wire cable core 6 are wrapped with a wrapping layer 502, and an insulating inner sheath layer 501 is extruded outside the wrapping layer 502. The inner sheath layer 501 is filled with an inorganic mineral substance layer 4, the inorganic mineral substance layer 4 is coated with a mica tape layer 3 wrapped by a plurality of layers of fireproof mica tape layers, the mica tape layer 3 is sequentially coated with a metal outer sheath layer 2 and a flame-retardant outer sheath layer 1, the metal sheath 2 is an embossed copper sheath or an embossed aluminum alloy sheath, and the embossed copper sheath or the embossed aluminum alloy sheath ensures that the cable has a larger bending radius and is convenient for cable laying operation.
Preferably, each of the main cable 5 cores and one of the ground cable cores 6 closely surround a ring. Preferably, each of the main wire cable core 5 and the ground wire cable core 6 is composed of seven solid copper conductors.
Preferably, a wrapping layer 502 wrapped by each of the main electric wire cable cores 5 and the ground wire cable cores 6 is a high-temperature resistant flame-retardant non-woven fabric layer.
Preferably, the insulating inner sheath layer 501 is a ceramic low-smoke halogen-free polyolefin insulating layer, a hard ceramic hard shell can be generated under a high-temperature condition, a good heat insulation and fire insulation effect is achieved, and normal power-on use of the main point cable core 5 and the ground wire cable core 6 is guaranteed.
Preferably, the flame-retardant outer sheath layer 1 is a low-smoke halogen-free flame-retardant outer sheath layer, so that toxic smoke cannot be emitted during combustion, and secondary damage to a human body is avoided.
While the foregoing description is of the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that the invention is not limited by the foregoing embodiments, which are merely illustrative of the principles of the invention, but is capable of numerous variations and modifications without departing from the spirit and scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a fireproof cable, its includes four piece at least main electric wire cable cores and a ground wire cable core, its characterized in that: every main electric wire cable core and a ground wire cable core all around having a band layer outward, the band layer all crowded package outward has an insulating inner sheath layer, insulating inner sheath layer intussuseption is filled with inorganic mineral substance layer, inorganic mineral substance layer outer cladding is one by the fire-resistant mica tape layer of multilayer around the package mica tape layer that forms, the outer cladding of mica tape layer has a metal sheath layer and a fire-retardant oversheath layer in proper order, the metal sheath layer is embossing copper sheath or embossing aluminum alloy restrictive coating.
2. The fire-protected cable of claim 1, wherein: each main line cable core and one ground wire cable core are tightly encircled to form a ring.
3. The fire-protected cable of claim 1, wherein: each main line cable core and one ground wire cable core are composed of seven solid copper conductors.
4. The fireproof cable of claim 1, wherein the wrapping layer wrapped around each of the main and ground cable cores is a high temperature resistant flame retardant non-woven fabric layer.
5. The fire-protected cable of claim 1, wherein: the insulating inner jacket layer is a ceramic low-smoke halogen-free polyolefin insulating layer.
6. The fire-protected cable of claim 1, wherein: the flame-retardant outer sheath layer is a low-smoke halogen-free flame-retardant outer sheath layer.
CN201810699760.4A 2018-06-29 2018-06-29 Fireproof cable Pending CN110660506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810699760.4A CN110660506A (en) 2018-06-29 2018-06-29 Fireproof cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810699760.4A CN110660506A (en) 2018-06-29 2018-06-29 Fireproof cable

Publications (1)

Publication Number Publication Date
CN110660506A true CN110660506A (en) 2020-01-07

Family

ID=69026789

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810699760.4A Pending CN110660506A (en) 2018-06-29 2018-06-29 Fireproof cable

Country Status (1)

Country Link
CN (1) CN110660506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112420266A (en) * 2020-11-23 2021-02-26 贵州天虹志远电线电缆有限公司 Fireproof cable with anti-oxidation metal sheath

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112420266A (en) * 2020-11-23 2021-02-26 贵州天虹志远电线电缆有限公司 Fireproof cable with anti-oxidation metal sheath

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